I was attacked and killed unannounced this morning (4-12-2015) by a group of 4-5 players whose names I did not recognize and did not identify themselves.

I spawned inside my house (sealed teir 6) and they were attacking my house (with what, I could not tell as one of their players was trying to glitch my door).

I do not know if they were seiging me (if they were not, they could not get in, and I can deal with losing a few crafting stations), but if they were, it was done so without prior warning in clear violation of the server rules.